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. Lretfers Patent No. 74,702, dated February 18, 1868.

IMPROVEMENT IN BUNGS.

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TO ALL WHOM IT MAY CONCERN:

Be it.known that I, JAMES B. LEI-linksom of New York, in the county of .New York, and in the State of New York, have vinvented certain new and useful Improvements in Bungs; and do hereby declare that the t`ollowing is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

In the annexed drawings, making part of this specification, A represents a metallic bung, with a ange or rim, a., around its outer edge. B represents a. short sl1at`t,'\vhieh has a flange formed upon it :it its centre, land in this flange :ire formed the cog-teeth e e. The outer end `o this shaft passes through the centre ot the bung, and is made fast to it by means of a nut, C, while the inner end passes through a disk, G, and then has a pin, d, passed through it, to keep the disk from slipping oli'. The inner face of the disk has two slots or grooves out in it, and in these grooves lie two sliding knives, D D. These knives have recesses formed in one edge, into which the teeth e e catch. When the disk G is held stationary, and the hung A is partially revolved, the teeth e e, acting upon the knives D D, cause them to be thrust out beyond the periphery of the hung, so that they will catch, andcutting their way into the wood of the stave, hold the bung firmly and securely in place.

When the bung is inserted in the hole in the barrel made to receive it, the wood of the stave, fitting against the periphery of the disk G, holds it, while a. wrench may be applied to the bung for the purpose of causing it to revolve, and thus thrust out the knives D D. The outer ends of the knives are so bevelled and sharpened that they will readily take into the wood of the stave.

I do not claim a bung, having two ports, with sliding knives between.

rlhe shaft B, provided with cog-teeth ee, in combination with the knives D D, provided with recesses, as described, said knives being arranged to operate between the bung A and case a, as and for the purposes specified.

In testimony that I claim the foregoing, I have hereunto set my hand, this day of ,'1867.

JAMES B. LEFFERSON.

Witnesses:

A. N. MARR, C. Cox. 

